Tank.



wirr: p rvr: 2' -v mi@ l) i i nimma n. armonia. or BUsHniiLr, trimmers.

' TANK.

wearer,

Application lec Apri123, 19.18. Serial No. 230,361.

To all whom it mdy'concem:

Be it known that I, HILMER N. ENHOLM, a citizen "of the United States, residing at v Bushnell, in the county of McDonough and State of Illinois, 'have invented certain new and useful Improvements in Tanks, of

which the following-is a specification. .Y

This invention relates to tanks and like receptacles constructed of cementitious material, and has for one of its objects to produce a device of this material having dead air spacesin its walls entirely inclosed by the material of which the'tank is constructed.

Another object of the invention is to produce a deviceof this character having hollow core members within its walls with their interiors communicating and entirely inclosed by the material of which the tank is constructed.

Another object of the invention is to produce a tank having dead air spaces in its# walls entirely inclosed by the material Aof which the tank is constructed and having a tubular H member'eztending through the receptacle and into the ground below the frost line and terminating above .the upper line of the receptacle.

Another object. of the invention is to pro; duce a device of this character having a plurality of hollow core members within its walls engaging end to end and with their interiors communicating and entirely inelosed bythe material of which the tank is constructed.

With these and other objects in view, the invention consists in certain novel features of construction, as herein after shown and described 'and then. specically pointed out in the claims; and in the drawings illustrative of the preferred embodiment of the invention- Figure 1 is a proved tank.

Fig. 2 is a transverse section.

Fig. 3 is a transverse section illustrating a modiication in the construction of the botperspective view of the iml tom of the tank.lv

The 'tank will be formed in suitable mold devices, not shown, as theyformno part-of the present invention. The vertical walls 10 and thebottom 11 of theta-nk are .provided with dead air spaces communicating with each other, as shown in Figs. Qiand 3;

Thevdead air spacesare deiined Vbycore members, preferably in a plurality of hollow sections 12, constructed as shown more particularly in Figs. 2 and 3, open at the ends and engaging end to end, so that their interiors communicate and produce a continuous air space in the vertical walls.

The core members of th-e bottom of the tank communicate at their ends as shown at 13 with the core members ci the vertical walls, so that the air spaces of all the core members communicate.

'flhe core members may be formed of any sultablematerial, either of wood as vshown in Figs. 2 and 4, or of sheet metal, as shown in Fig. 3, and will each preferably be strengthened by an intermediate diaphragm 14,v perforated to permit the passage of the air. l r` The core members are located within the molds when the tankv is constructed land remain within the walls of the com-- Patented. oet. ea, reis.

tank render them nonconductive to either cold or heat and render the tanks non-freezing in Winter and keeps the water cool in summer. p*

Located within the-.tank is a conductor pipe 15 extending through the bottom of` the tankand into the earth below the frost. v

line and above the upper edgeof the tank; The lower end of the pipe 15 is kopenand may be embedded in `loose rocks or the like',v

represented at 16, to provide for the free entrance of the warmer air, and preferably open at the top and providedwith a screen 1 7 to prevent the entrance of insects or the like.A By this' means the warmerair within ilo the pipe vwill prevent the wetteiat the center of thetank from freezing.

A section of tilingJ 19 will be disposed varound the pipe l5 Where it passes through the bottom cores before the eementitious material is poured into the mold, to seul the dead air spaces and prevent the enti-:mee of Water.

The improved tank een be constructed in smaller sizes for shipment7 or erected upon the ground Where they are to renaztin per'- manently. lf erected where the)T are to remain, the earth will be excavated to receive the curved bottom portion., und the vertical Walls constructed in suitable mold devices. Having thus described the invei'itioii. wligit isIk claimed as new is: l l.l A cement receptacle having; hollow bot. tom and side Wells, a lrlollow eore member formed of rigid material disposed within the bottom Well and including upper :md

lower plates ot different lengths, l'ioliow seetional rigid core members disposed xvi hin the Side Walls oit the receptacle and etch including spaced plates, the inner plates o' the side core members being shorter than leemte/.1.

the outer plates end engaging the upper vplete o? the bottom @ore member und the outer plates of the side eore members en gagging the lower plete of the bottom core member, horizontal plates connecting the inner and outer plates of the Side core members and formingv closures therefor, spacingmembers interposed between the plates of the side core members., end e tubular mem- 2. A cement receptacle l'ievingliollew bottom and side Wells, e eore member disposed Within the bottom Well, core men'ibers un ranged Within the side Weils end lntviig their' up e ends closed. end their lower ends eommunie .ting with the core member in .the bottom of the tafeln there being; an opening formed in the bottom Well and in the bottom eore member, e bushing seated in seid opening, and e. tubular member extending through seid bushing end having its lower end embedded in the Iground.

in testiino Wheremf l affix. .my signature.

itilllil.. lil'. ENHUL'M. [L el 

